408728342 has 16 divisors (see below), whose sum is σ = 704030400. Its totient is φ = 176007240.

The previous prime is 408728251. The next prime is 408728347. The reversal of 408728342 is 243827804.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 408728296 and 408728305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408728347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488492 + ... + 489327.

It is an arithmetic number, because the mean of its divisors is an integer number (44001900).

Almost surely, 2^408728342 is an apocalyptic number.

408728342 is a deficient number, since it is larger than the sum of its proper divisors (295302058).

408728342 is a wasteful number, since it uses less digits than its factorization.

408728342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977851.

The product of its (nonzero) digits is 86016, while the sum is 38.

The square root of 408728342 is about 20217.0309887481. The cubic root of 408728342 is about 742.1270322049.

The spelling of 408728342 in words is "four hundred eight million, seven hundred twenty-eight thousand, three hundred forty-two".